Map of East Africa showing tectonic plates
USGS, 5 May 1999
Map of East Africa showing some of the historically active volcanoes (red
triangles) and the Afar Triangle (shaded, center)—a so-called triple
junction (or triple point), where three plates are pulling away from one
another: the Arabian Plate, and the two parts of the African Plate (the
Nubian and the Somalian) splitting along the East African Rift Zone.